WO2012111956A3 - Separator, preparation method thereof, and electrochemical device comprising same - Google Patents

Separator, preparation method thereof, and electrochemical device comprising same Download PDF

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Publication number
WO2012111956A3
WO2012111956A3 PCT/KR2012/001099 KR2012001099W WO2012111956A3 WO 2012111956 A3 WO2012111956 A3 WO 2012111956A3 KR 2012001099 W KR2012001099 W KR 2012001099W WO 2012111956 A3 WO2012111956 A3 WO 2012111956A3
Authority
WO
WIPO (PCT)
Prior art keywords
coating layer
organic
separator
porous
binder polymer
Prior art date
Application number
PCT/KR2012/001099
Other languages
French (fr)
Korean (ko)
Other versions
WO2012111956A2 (en
Inventor
하정민
김노마
조병규
김기영
진선미
Original Assignee
주식회사 엘지화학
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020120013889A external-priority patent/KR101254693B1/en
Application filed by 주식회사 엘지화학 filed Critical 주식회사 엘지화학
Priority to CN201280009067.0A priority Critical patent/CN103477491B/en
Priority to EP12746471.7A priority patent/EP2677590B1/en
Priority to JP2013553373A priority patent/JP5976015B2/en
Publication of WO2012111956A2 publication Critical patent/WO2012111956A2/en
Publication of WO2012111956A3 publication Critical patent/WO2012111956A3/en
Priority to US13/965,660 priority patent/US9130215B2/en
Priority to US14/820,264 priority patent/US9954211B2/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/489—Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/403—Manufacturing processes of separators, membranes or diaphragms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/409—Separators, membranes or diaphragms characterised by the material
    • H01M50/411—Organic material
    • H01M50/414—Synthetic resins, e.g. thermoplastics or thermosetting resins
    • H01M50/417—Polyolefins
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/409—Separators, membranes or diaphragms characterised by the material
    • H01M50/411—Organic material
    • H01M50/414—Synthetic resins, e.g. thermoplastics or thermosetting resins
    • H01M50/42—Acrylic resins
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/409—Separators, membranes or diaphragms characterised by the material
    • H01M50/446—Composite material consisting of a mixture of organic and inorganic materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/409—Separators, membranes or diaphragms characterised by the material
    • H01M50/449—Separators, membranes or diaphragms characterised by the material having a layered structure
    • H01M50/451—Separators, membranes or diaphragms characterised by the material having a layered structure comprising layers of only organic material and layers containing inorganic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/409—Separators, membranes or diaphragms characterised by the material
    • H01M50/449—Separators, membranes or diaphragms characterised by the material having a layered structure
    • H01M50/457—Separators, membranes or diaphragms characterised by the material having a layered structure comprising three or more layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/46—Separators, membranes or diaphragms characterised by their combination with electrodes
    • H01M50/461—Separators, membranes or diaphragms characterised by their combination with electrodes with adhesive layers between electrodes and separators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Cell Separators (AREA)

Abstract

A separator of the present invention comprises: a porous substrate comprising pores; a porous organic-inorganic coating layer which is formed on at least one surface of the porous substrate and comprises a mixture of inorganic particles and a first binder polymer, in which the first binder polymer comprises a predetermined copolymer; and an organic coating layer of a second binder polymer dispersed so as to have a plurality of uncoated regions scattered on the surface of the organic-inorganic coating layer. The porous organic-inorganic coating layer formed in the separator of the present invention has a high packing density, which facilitates the implementing of a thin film battery without the deterioration of stability, and the separation of inorganic particles within the porous organic-inorganic coating layer during an assembly process of an electrochemical device is improved by a sufficient binding force to a porous substrate. In addition, the organic coating layer increases the binding force of a separator to an electrode while only slightly increasing resistance.
PCT/KR2012/001099 2011-02-15 2012-02-14 Separator, preparation method thereof, and electrochemical device comprising same WO2012111956A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CN201280009067.0A CN103477491B (en) 2011-02-15 2012-02-14 Barrier film, its manufacture method and comprise the electrochemical appliance of this barrier film
EP12746471.7A EP2677590B1 (en) 2011-02-15 2012-02-14 Separator, preparation method thereof, and electrochemical device comprising same
JP2013553373A JP5976015B2 (en) 2011-02-15 2012-02-14 Separator, method for manufacturing the same, and electrochemical device including the same
US13/965,660 US9130215B2 (en) 2011-02-15 2013-08-13 Separator, method for producing the same and electrochemical device including the same
US14/820,264 US9954211B2 (en) 2011-02-15 2015-08-06 Separator, method for producing the same and electrochemical device including the same

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20110013312 2011-02-15
KR10-2011-0013312 2011-02-15
KR1020120013889A KR101254693B1 (en) 2011-02-15 2012-02-10 A separator, the manufacturing method thereof, and electrochemical device containing the same
KR10-2012-0013889 2012-02-10

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US13/965,660 Continuation US9130215B2 (en) 2011-02-15 2013-08-13 Separator, method for producing the same and electrochemical device including the same

Publications (2)

Publication Number Publication Date
WO2012111956A2 WO2012111956A2 (en) 2012-08-23
WO2012111956A3 true WO2012111956A3 (en) 2012-12-20

Family

ID=46673032

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2012/001099 WO2012111956A2 (en) 2011-02-15 2012-02-14 Separator, preparation method thereof, and electrochemical device comprising same

Country Status (3)

Country Link
EP (1) EP2677590B1 (en)
TW (1) TWI469425B (en)
WO (1) WO2012111956A2 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104040756B (en) 2012-09-24 2016-04-13 株式会社Lg化学 For the preparation of the method for the barrier film of lithium secondary battery, the barrier film prepared by the method and the lithium secondary battery comprising it
EP2869363B1 (en) * 2012-10-05 2017-04-26 LG Chem, Ltd. Separator, and electrochemical device comprising same
CN102856522B (en) * 2012-10-09 2015-04-29 中国海诚工程科技股份有限公司 High temperature-resistant cellulose fiber base material-containing lithium ion battery diaphragm and preparation method of the same
CN103915589A (en) * 2013-01-08 2014-07-09 东莞市振华新能源科技有限公司 Preparation method of lithium ion battery diaphragm
US20140272528A1 (en) * 2013-03-15 2014-09-18 Apple Inc. Manufacturing techniques using binder coatings in three-dimensional stacked-cell batteries
JP5848783B2 (en) * 2014-01-24 2016-01-27 旭化成イーマテリアルズ株式会社 Laminate, power storage device, and lithium ion secondary battery
KR101707193B1 (en) 2014-04-01 2017-02-27 주식회사 엘지화학 Preparation method of separator, separator formed therefrom, and electrochemical device containing the same
TWI589052B (en) * 2015-04-13 2017-06-21 國立中央大學 Electrolyte membrane
CN107293680B (en) * 2016-04-01 2020-09-22 宁德新能源科技有限公司 Lithium ion battery and isolating membrane thereof
CN108630894A (en) * 2017-03-23 2018-10-09 株式会社东芝 Secondary cell, battery pack and vehicle
TWI803648B (en) 2018-06-12 2023-06-01 南韓商Ｌｇ化學股份有限公司 Separator for electrochemical device including inorganic coating layer and method for manufacturing the same
CN113745759A (en) * 2020-05-14 2021-12-03 深圳市鼎泰祥新能源科技有限公司 Coating diaphragm, preparation method and method for inhibiting lithium dendrites
WO2022110228A1 (en) * 2020-11-30 2022-06-02 宁德时代新能源科技股份有限公司 Isolating membrane, preparation method therefor and related secondary battery, battery module, battery pack and device
CN113363486A (en) * 2021-05-28 2021-09-07 东莞维科电池有限公司 Soft package lithium ion battery

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KR20060063751A (en) * 2004-12-07 2006-06-12 주식회사 엘지화학 Surface-treated microporous membrane and electrochemical device prepared thereby
KR20070082578A (en) * 2006-02-16 2007-08-21 주식회사 엘지화학 Organic/inorganic composite electrolyte and electrochemical device prepared thereby
KR20090051546A (en) * 2007-11-19 2009-05-22 주식회사 엘지화학 A separator having porous coating layer and electrochemical device containing the same
KR20090055305A (en) * 2007-11-28 2009-06-02 삼성에스디아이 주식회사 Negative electrode for lithium secondary battery and lithium secondary battery comprising same
WO2011115376A2 (en) * 2010-03-17 2011-09-22 주식회사 엘지화학 Separator and electrochemical device having same

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TW519777B (en) * 1999-10-18 2003-02-01 Zeon Corp The binder composition for the secondary battery electrode of lithium ion and its utilization
JP2001118558A (en) * 1999-10-19 2001-04-27 Asahi Kasei Corp Partially coated separator
KR100749301B1 (en) * 2004-07-07 2007-08-14 주식회사 엘지화학 New organic/inorganic composite porous film and electrochemical device prepared thereby
EP3745494A1 (en) * 2004-09-02 2020-12-02 Lg Chem, Ltd. Organic/inorganic composite porous film and electrochemical device prepared thereby
KR100775310B1 (en) * 2004-12-22 2007-11-08 주식회사 엘지화학 Organic/inorganic composite microporous membrane and electrochemical device prepared thereby
KR100858214B1 (en) 2005-06-27 2008-09-10 주식회사 엘지화학 Bi-layered organic/inorganic composite microporous separator with heterogeneous surface and electrochemical device using the same
RU2403653C2 (en) * 2005-12-06 2010-11-10 Эл Джи Кем, Лтд. Organic/inorganic composit divider with morphology gradient, method for making thereof and electrochemical device containing same
KR100754746B1 (en) * 2007-03-07 2007-09-03 주식회사 엘지화학 Organic/inorganic composite separator having porous active coating layer and electrochemical device containing the same

Patent Citations (5)

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KR20060063751A (en) * 2004-12-07 2006-06-12 주식회사 엘지화학 Surface-treated microporous membrane and electrochemical device prepared thereby
KR20070082578A (en) * 2006-02-16 2007-08-21 주식회사 엘지화학 Organic/inorganic composite electrolyte and electrochemical device prepared thereby
KR20090051546A (en) * 2007-11-19 2009-05-22 주식회사 엘지화학 A separator having porous coating layer and electrochemical device containing the same
KR20090055305A (en) * 2007-11-28 2009-06-02 삼성에스디아이 주식회사 Negative electrode for lithium secondary battery and lithium secondary battery comprising same
WO2011115376A2 (en) * 2010-03-17 2011-09-22 주식회사 엘지화학 Separator and electrochemical device having same

Also Published As

Publication number Publication date
EP2677590A4 (en) 2016-12-07
WO2012111956A2 (en) 2012-08-23
TW201246663A (en) 2012-11-16
EP2677590B1 (en) 2019-04-03
EP2677590A2 (en) 2013-12-25
TWI469425B (en) 2015-01-11

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